Report on which contacts have been applied to a tag

Is there a way to pull a report which shows which contacts have been added to a particular tag?

There is a “tag application” report that will show you what contacts have had what tags applied but note that it will not show you any tag applications that have been since removed, only the current tag applications. If you are looking for tracking tag applications regardless of having been removed then you would have to do so with an external system that retains that information as Infusionsoft doesn’t keep that history (at least not in a way that is available in the UI)